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Shrink Disc RfN 4022 Standard Series

Simplified manufacture – only plain shaft and bore diameters with easily achieved surface finish and tolerances are required.
Easy adjustability - Easy mounting - Easy removal - Low susceptibility to contamination - Highest reliability


This product is available in the following configurations: SDA, SDB, SDC and SDD.

RINGFEDER® RfN 4022

CAD data download is available after login.
metric inch
CAD Typ d D d1 G L2 T nSc Schrauben-Norm FSc DG TA
    mm mm mm mm mm Nm Stück     mm Nm
  12 11 35,5 24 14 10 50 3 ISO 4014/4017 10.9 6 12
  12 12 35,5 24 14 10 50 3 ISO 4014/4017 10.9 6 12
  14 13 38 26 16 10 70 3 ISO 4014/4017 10.9 6 12
  14 14 38 26 16 10 70 3 ISO 4014/4017 10.9 6 12
  16 15 41 28 18 14 80 3 ISO 4014/4017 10.9 6 12
  16 16 41 28 18 14 80 3 ISO 4014/4017 10.9 6 12
  18 17 44 30 20 14 130 4 ISO 4014/4017 10.9 6 12
  18 18 44 30 20 14 130 4 ISO 4014/4017 10.9 6 12
  20 19 47 32 22 15 140 4 ISO 4014/4017 10.9 6 12
  20 20 47 32 22 15 140 4 ISO 4014/4017 10.9 6 12
  25 22 50 36 27 19 200 5 ISO 4014/4017 10.9 6 12
  25 24 50 36 27 19 200 5 ISO 4014/4017 10.9 6 12
  25 25 50 36 27 19 200 5 ISO 4762 10.9 6 12
  30 26 60 44 32 19 300 6 ISO 4014/4017 10.9 6 12
  30 28 60 44 32 19 300 6 ISO 4014/4017 10.9 6 12
  30 30 60 44 32 19 300 6 ISO 4014/4017 10.9 6 12
  35 32 72 52 38 21 450 5 ISO 4014/4017 10.9 8 30
  35 35 72 52 38 21 500 5 ISO 4014/4017 10.9 8 30
  35 36 72 52 38 21 500 5 ISO 4014/4017 10.9 8 30
  40 38 80 61 46 23 720 6 ISO 4014/4017 10.9 8 30
  40 40 80 61 46 23 750 6 ISO 4014/4017 10.9 8 30
  40 44 80 61 46 23 750 6 ISO 4014/4017 10.9 8 30
  50 42 90 68 53 25 1000 8 ISO 4014/4017 10.9 8 30
  50 45 90 68 53 25 1300 8 ISO 4014/4017 10.9 8 30
  50 50 90 68 53 25 1300 8 ISO 4014/4017 10.9 8 30
  55 45 100 72 58 27 1600 8 ISO 4014/4017 10.9 8 30
  55 52 100 72 58 27 1600 8 ISO 4014/4017 10.9 8 30
  55 55 100 72 58 27 1600 8 ISO 4014/4017 10.9 8 30
  60 50 110 80 63 27 2000 9 ISO 4014/4017 10.9 8 30
  60 60 110 80 63 27 2000 9 ISO 4014/4017 10.9 8 30
  60 62 110 80 63 27 2000 9 ISO 4014/4017 10.9 8 30
  70 60 115 86 74 27 2100 9 ISO 4014/4017 10.9 8 30
  70 65 115 86 74 27 2100 9 ISO 4014/4017 10.9 8 30
  70 70 115 86 74 27 2100 9 ISO 4014/4017 10.9 8 30
  80 70 138 100 84 29 4000 10 ISO 4014/4017 10.9 10 59
  80 75 138 100 84 29 4000 10 ISO 4014/4017 10.9 10 59
  80 80 138 100 84 29 4000 10 ISO 4014/4017 10.9 10 59
  90 80 155 114 94 35 5700 12 ISO 4014/4017 10.9 10 59
  90 85 155 114 94 35 5700 12 ISO 4014/4017 10.9 10 59
  90 90 155 114 94 35 5700 12 ISO 4014/4017 10.9 10 59
  100 90 170 124 104 40 8400 12 ISO 4014/4017 10.9 12 100
  100 95 170 124 104 40 8400 12 ISO 4014/4017 10.9 12 100
  100 100 170 124 104 40 8400 12 ISO 4014/4017 10.9 12 100
  110 100 185 136 116 47 9200 12 ISO 4014/4017 10.9 12 100
  110 105 185 136 116 47 9200 12 ISO 4014/4017 10.9 12 100
  110 110 185 136 116 47 9200 12 ISO 4014/4017 10.9 12 100
  125 115 215 160 126 50 20000 12 ISO 4014/4017 10.9 16 250
  125 120 215 160 126 50 21000 12 ISO 4014/4017 10.9 16 250
  125 125 215 160 126 50 21000 12 ISO 4014/4017 10.9 16 250
  140 130 230 172 146 54 26000 14 ISO 4014/4017 10.9 16 250
  140 135 230 172 146 54 26000 14 ISO 4014/4017 10.9 16 250
  140 140 230 172 146 54 26000 14 ISO 4014/4017 10.9 16 250
  155 150 263 192 166 58 31000 15 ISO 4014/4017 10.9 16 250
  155 155 263 192 166 58 31000 15 ISO 4014/4017 10.9 16 250
  155 160 263 192 166 58 31000 15 ISO 4014/4017 10.9 16 250
  170 160 290 204 176 62 36000 16 ISO 4014/4017 10.9 16 250
  170 165 290 204 176 62 36000 16 ISO 4014/4017 10.9 16 250
  170 170 290 204 176 62 36000 16 ISO 4014/4017 10.9 16 250
  180 170 300 218 186 62 43000 18 ISO 4014/4017 10.9 16 250
  180 175 300 218 186 62 43000 18 ISO 4014/4017 10.9 16 250
  180 180 300 218 186 62 43000 18 ISO 4014/4017 10.9 16 250
  190 180 320 232 196 79 60000 15 ISO 4014/4017 10.9 20 490
  190 185 320 232 196 79 60000 15 ISO 4014/4017 10.9 20 490
  190 190 320 232 196 79 60000 15 ISO 4014/4017 10.9 20 490
  200 190 340 246 206 79 67000 16 ISO 4014/4017 10.9 20 490
  200 195 340 246 206 79 67000 16 ISO 4014/4017 10.9 20 490
  200 200 340 246 206 79 67000 16 ISO 4014/4017 10.9 20 490
  220 200 370 270 226 98 93000 14 ISO 4014/4017 10.9 24 850
  220 210 370 270 226 98 93000 14 ISO 4014/4017 10.9 24 850
  220 220 370 270 226 98 93000 14 ISO 4014/4017 10.9 24 850
  240 220 405 296 246 101 117000 16 ISO 4014/4017 10.9 24 850
  240 230 405 296 246 101 117000 16 ISO 4014/4017 10.9 24 850
  240 240 405 296 246 101 117000 16 ISO 4014/4017 10.9 24 850
  260 240 430 318 266 112 126000 16 ISO 4014/4017 10.9 24 850
  260 250 430 318 266 112 126000 16 ISO 4014/4017 10.9 24 850
  260 260 430 318 266 112 126000 16 ISO 4014/4017 10.9 24 850
  280 260 460 340 286 126 151000 18 ISO 4014/4017 10.9 24 850
  280 270 460 340 286 126 151000 18 ISO 4014/4017 10.9 24 850
  280 280 460 340 286 126 151000 18 ISO 4014/4017 10.9 24 850
  300 280 485 360 306 130 178000 20 ISO 4014/4017 10.9 24 850
  300 290 485 360 306 130 178000 20 ISO 4014/4017 10.9 24 850
  300 300 485 360 306 130 178000 20 ISO 4014/4017 10.9 24 850
  320 280 520 380 330 130 248000 20 ISO 4014/4017 10.9 27 1250
  320 300 520 380 330 130 248000 20 ISO 4014/4017 10.9 27 1250
  320 320 520 380 330 130 248000 20 ISO 4014/4017 10.9 27 1250
  340 300 570 402 350 144 275000 21 ISO 4014/4017 10.9 27 1250
  340 320 570 402 350 144 275000 21 ISO 4014/4017 10.9 27 1250
  340 340 570 402 350 144 275000 21 ISO 4014/4017 10.9 27 1250
  360 320 590 424 370 144 290000 21 ISO 4014/4017 10.9 27 1250
  360 340 590 424 370 144 290000 21 ISO 4014/4017 10.9 27 1250
  360 360 590 424 370 144 290000 21 ISO 4014/4017 10.9 27 1250
  390 350 630 458 400 148 363000 20 ISO 4014/4017 10.9 30 1700
  390 370 630 458 400 148 363000 20 ISO 4014/4017 10.9 30 1700
  390 390 630 458 400 148 363000 20 ISO 4014/4017 10.9 30 1700
  420 380 650 490 430 168 407000 21 ISO 4014/4017 10.9 30 1700
  420 400 650 490 430 168 407000 21 ISO 4014/4017 10.9 30 1700
  420 420 650 490 430 168 407000 21 ISO 4014/4017 10.9 30 1700
  440 400 670 512 450 176 426000 21 ISO 4014/4017 10.9 30 1700
  440 420 670 512 450 176 426000 21 ISO 4014/4017 10.9 30 1700
  440 440 670 512 450 176 426000 21 ISO 4014/4017 10.9 30 1700
CAD Typ d D d1 G L2 T nSc Schrauben-Norm FSc DG TA
  inch inch inch inch inch ft-lbs pcs. mm ft-lbs
  12 0.433 1.378 0.945 0.551 0.394 37 3 ISO 4014/4017 10.9 M6 9
  12 0.472 1.378 0.945 0.551 0.394 37 3 ISO 4014/4017 10.9 M6 9
  14 0.512 1.496 1.024 0.630 0.394 52 3 ISO 4014/4017 10.9 M6 9
  14 0.551 1.496 1.024 0.630 0.394 52 3 ISO 4014/4017 10.9 M6 9
  16 0.591 1.614 1.102 0.709 0.551 59 3 ISO 4014/4017 10.9 M6 9
  16 0.630 1.614 1.102 0.709 0.551 59 3 ISO 4014/4017 10.9 M6 9
  18 0.669 1.732 1.181 0.787 0.551 96 4 ISO 4014/4017 10.9 M6 9
  18 0.709 1.732 1.181 0.787 0.551 96 4 ISO 4014/4017 10.9 M6 9
  20 0.748 1.850 1.260 0.866 0.591 103 4 ISO 4014/4017 10.9 M6 9
  20 0.787 1.850 1.260 0.866 0.591 103 4 ISO 4014/4017 10.9 M6 9
  25 0.866 1.969 1.417 1.063 0.748 148 5 ISO 4014/4017 10.9 M6 9
  25 0.945 1.969 1.417 1.063 0.748 148 5 ISO 4014/4017 10.9 M6 9
  25 0.984 1.969 1.417 1.063 0.748 148 5 ISO 4014/4017 10.9 M6 9
  30 1.024 2.362 1.732 1.260 0.748 221 6 ISO 4014/4017 10.9 M6 9
  30 1.102 2.362 1.732 1.260 0.748 221 6 ISO 4014/4017 10.9 M6 9
  30 1.181 2.362 1.732 1.260 0.748 221 6 ISO 4014/4017 10.9 M6 9
  35 1.260 2.835 2.047 1.496 0.827 332 5 ISO 4014/4017 10.9 M8 22
  35 1.378 2.835 2.047 1.496 0.827 369 5 ISO 4014/4017 10.9 M8 22
  35 1.417 2.835 2.047 1.496 0.827 369 5 ISO 4014/4017 10.9 M8 22
  40 1.496 3.150 2.402 1.811 0.906 531 6 ISO 4014/4017 10.9 M8 22
  40 1.575 3.150 2.402 1.811 0.906 553 6 ISO 4014/4017 10.9 M8 22
  40 1.732 3.150 2.402 1.811 0.906 553 6 ISO 4014/4017 10.9 M8 22
  50 1.654 3.543 2.677 2.087 0.984 738 8 ISO 4014/4017 10.9 M8 22
  50 1.772 3.543 2.677 2.087 0.984 959 8 ISO 4014/4017 10.9 M8 22
  50 1.969 3.543 2.677 2.087 0.984 959 8 ISO 4014/4017 10.9 M8 22
  55 1.772 3.937 2.835 2.283 1.063 1180 8 ISO 4014/4017 10.9 M8 22
  55 2.047 3.937 2.835 2.283 1.063 1180 8 ISO 4014/4017 10.9 M8 22
  55 2.165 3.937 2.835 2.283 1.063 1180 8 ISO 4014/4017 10.9 M8 22
  60 1.969 4.331 3.150 2.480 1.063 1475 9 ISO 4014/4017 10.9 M8 22
  60 2.362 4.331 3.150 2.480 1.063 1475 9 ISO 4014/4017 10.9 M8 22
  60 2.441 4.331 3.150 2.480 1.063 1475 9 ISO 4014/4017 10.9 M8 22
  70 2.362 4.528 3.386 2.913 1.063 1549 9 ISO 4014/4017 10.9 M8 22
  70 2.559 4.528 3.386 2.913 1.063 1549 9 ISO 4014/4017 10.9 M8 22
  70 2.756 4.528 3.386 2.913 1.063 1549 9 ISO 4014/4017 10.9 M8 22
  80 2.756 5.433 3.937 3.307 1.142 2950 10 ISO 4014/4017 10.9 M10 45
  80 2.953 5.433 3.937 3.307 1.142 2950 10 ISO 4014/4017 10.9 M10 45
  80 3.150 5.433 3.937 3.307 1.142 2950 10 ISO 4014/4017 10.9 M10 45
  90 3.150 6.102 4.488 3.701 1.378 4204 12 ISO 4014/4017 10.9 M10 45
  90 3.346 6.102 4.488 3.701 1.378 4204 12 ISO 4014/4017 10.9 M10 45
  90 3.543 6.102 4.488 3.701 1.378 4204 12 ISO 4014/4017 10.9 M10 45
  100 3.543 6.693 4.882 4.094 1.575 6196 12 ISO 4014/4017 10.9 M12 75
  100 3.740 6.693 4.882 4.094 1.575 6196 12 ISO 4014/4017 10.9 M12 75
  100 3.937 6.693 4.882 4.094 1.575 6196 12 ISO 4014/4017 10.9 M12 75
  110 3.937 7.283 5.354 4.567 1.850 6786 12 ISO 4014/4017 10.9 M12 75
  110 4.134 7.283 5.354 4.567 1.850 6786 12 ISO 4014/4017 10.9 M12 75
  110 4.331 7.283 5.354 4.567 1.850 6786 12 ISO 4014/4017 10.9 M12 75
  125 4.528 8.465 6.299 4.961 1.969 14751 12 ISO 4014/4017 10.9 M16 185
  125 4.724 8.465 6.299 4.961 1.969 15489 12 ISO 4014/4017 10.9 M16 185
  125 4.921 8.465 6.299 4.961 1.969 15489 12 ISO 4014/4017 10.9 M16 185
  140 5.118 9.055 6.772 5.748 2.126 19177 14 ISO 4014/4017 10.9 M16 185
  140 5.315 9.055 6.772 5.748 2.126 19177 14 ISO 4014/4017 10.9 M16 185
  140 5.512 9.055 6.772 5.748 2.126 19177 14 ISO 4014/4017 10.9 M16 185
  155 5.906 10.354 7.559 6.535 2.283 22864 15 ISO 4014/4017 10.9 M16 185
  155 6.102 10.354 7.559 6.535 2.283 22864 15 ISO 4014/4017 10.9 M16 185
  155 6.299 10.354 7.559 6.535 2.283 22864 15 ISO 4014/4017 10.9 M16 185
  170 6.299 11.417 8.031 6.929 2.441 26552 16 ISO 4014/4017 10.9 M16 185
  170 6.496 11.417 8.031 6.929 2.441 26552 16 ISO 4014/4017 10.9 M16 185
  170 6.693 11.417 8.031 6.929 2.441 26552 16 ISO 4014/4017 10.9 M16 185
  180 6.693 11.811 8.583 7.323 2.441 31715 18 ISO 4014/4017 10.9 M16 185
  180 6.890 11.811 8.583 7.323 2.441 31715 18 ISO 4014/4017 10.9 M16 185
  180 7.087 11.811 8.583 7.323 2.441 31715 18 ISO 4014/4017 10.9 M16 185
  190 7.087 12.598 9.134 7.717 3.110 44254 15 ISO 4014/4017 10.9 M20 361
  190 7.283 12.598 9.134 7.717 3.110 44254 15 ISO 4014/4017 10.9 M20 361
  190 7.480 12.598 9.134 7.717 3.110 44254 15 ISO 4014/4017 10.9 M20 361
  200 7.480 13.386 9.685 8.110 3.110 49417 16 ISO 4014/4017 10.9 M20 361
  200 7.677 13.386 9.685 8.110 3.110 49417 16 ISO 4014/4017 10.9 M20 361
  200 7.874 13.386 9.685 8.110 3.110 49417 16 ISO 4014/4017 10.9 M20 361
  220 7.874 14.567 10.630 8.898 3.858 68593 14 ISO 4014/4017 10.9 M24 627
  220 8.268 14.567 10.630 8.898 3.858 68593 14 ISO 4014/4017 10.9 M24 627
  220 8.661 14.567 10.630 8.898 3.858 68593 14 ISO 4014/4017 10.9 M24 627
  240 8.661 15.945 11.654 9.685 3.976 86295 16 ISO 4014/4017 10.9 M24 627
  240 9.055 15.945 11.654 9.685 3.976 86295 16 ISO 4014/4017 10.9 M24 627
  240 9.449 15.945 11.654 9.685 3.976 86295 16 ISO 4014/4017 10.9 M24 627
  260 9.449 16.929 12.520 10.472 4.409 92933 16 ISO 4014/4017 10.9 M24 627
  260 9.843 16.929 12.520 10.472 4.409 92933 16 ISO 4014/4017 10.9 M24 627
  260 10.236 16.929 12.520 10.472 4.409 92933 16 ISO 4014/4017 10.9 M24 627
  280 10.236 18.110 13.386 11.260 4.961 111372 18 ISO 4014/4017 10.9 M24 627
  280 10.630 18.110 13.386 11.260 4.961 111372 18 ISO 4014/4017 10.9 M24 627
  280 11.024 18.110 13.386 11.260 4.961 111372 18 ISO 4014/4017 10.9 M24 627
  300 11.024 19.094 14.173 12.047 5.118 131286 20 ISO 4014/4017 10.9 M24 627
  300 11.417 19.094 14.173 12.047 5.118 131286 20 ISO 4014/4017 10.9 M24 627
  300 11.811 19.094 14.173 12.047 5.118 131286 20 ISO 4014/4017 10.9 M24 627
  320 11.024 20.472 14.961 12.992 5.118 182915 20 ISO 4014/4017 10.9 M27 920
  320 11.811 20.472 14.961 12.992 5.118 182915 20 ISO 4014/4017 10.9 M27 920
  320 12.598 20.472 14.961 12.992 5.118 182915 20 ISO 4014/4017 10.9 M27 920
  340 11.811 22.441 15.827 13.780 5.669 202830 21 ISO 4014/4017 10.9 M27 920
  340 12.598 22.441 15.827 13.780 5.669 202830 21 ISO 4014/4017 10.9 M27 920
  340 13.386 22.441 15.827 13.780 5.669 202830 21 ISO 4014/4017 10.9 M27 920
  360 12.598 23.228 16.693 14.567 5.669 213893 21 ISO 4014/4017 10.9 M27 920
  360 13.386 23.228 16.693 14.567 5.669 213893 21 ISO 4014/4017 10.9 M27 920
  360 14.173 23.228 16.693 14.567 5.669 213893 21 ISO 4014/4017 10.9 M27 920
  390 13.780 24.803 18.031 15.748 5.827 267735 20 ISO 4014/4017 10.9 M30 1250
  390 14.567 24.803 18.031 15.748 5.827 267735 20 ISO 4014/4017 10.9 M30 1250
  390 15.354 24.803 18.031 15.748 5.827 267735 20 ISO 4014/4017 10.9 M30 1250
  420 14.961 25.591 19.291 16.929 6.614 300188 21 ISO 4014/4017 10.9 M30 1250
  420 15.748 25.591 19.291 16.929 6.614 300188 21 ISO 4014/4017 10.9 M30 1250
  420 16.535 25.591 19.291 16.929 6.614 300188 21 ISO 4014/4017 10.9 M30 1250
  440 15.748 26.378 20.157 17.717 6.929 314201 21 ISO 4014/4017 10.9 M30 1250
  440 16.535 26.378 20.157 17.717 6.929 314201 21 ISO 4014/4017 10.9 M30 1250
  440 17.323 26.378 20.157 17.717 6.929 314201 21 ISO 4014/4017 10.9 M30 1250

Characteristics

Shrink discs are the modern method for creating a mechanical shrink fit. The shrink disc consists of either one or two thrust rings with tapered bores and a mating tapered inner ring. By tightening locking screws the thrust rings are drawn together compressing the inner ring and applying pressure to the outside of the hub clamping it to the shaft. Being positioned around the hub there is only one interface transmitting the loads giving the shrink disc method distinct advantages such as offering the possibility of very concentric and well balanced connections that are suited to high speed applications. Traditional shrink fits require complicated calculations, close machining tolerances and fine surface finishes, they also need considerable effort with mounting and removal. The shrink disc connection has none of these disadvantages and is better than any of the other usual connection methods with regard to fatigue strength under alternating torsional stress.

  • Unlimited range of applications – RINGFEDER® Shrink Disc connections are suitable for securing all types of hubs onto shafts and axles. Replacing traditional shrink fits, keys and polygon connections, splined shafts etc. So cog wheels and sprockets, levers, lifters, cam discs, pulleys or brake discs, balance wheels, couplings, slip on gear mechanisms, flanges, pulley wheels and rotors can be attached absolutely reliable.
  • Reduced dimensions – for lower transmissible torques, especially for applications with restricted space.
  • Compensation of small tolerance errorsplease contact our engineers.
  • Maximum reliability – suitable for static, dynamic and impact loads.
  • Slitted inner ring – low forces and pressures on hub and shaft.
  • Simplified manufacture – only plain shaft and bore diameters with easily achieved surface finish and tolerances are required.
  • Easy mounting – no steps, keyways, splines are required, therefore hubs can be located and locked at any point or angle on the shaft. RINGFEDER® Shrink Discs use standard screws tightened with standard tools. No additional machining or fitting work is required.
  • Easy removal – after loosening the locking screws, the RINGFEDER® Shrink Disc will self release and the hub will move freely on the shaft.
  • Low susceptibility to contamination – when the locking screws are tightened the functional contact surfaces are pressed firmly together and prevent the ingress of dirt and moisture.

Surface finishes

For shaft diameter dw: Peak-to-valley height Ra ≤ 3,2 μm.

Tolerances

For shaft h9

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